Rangers from Yellowstone National Park are now trying to find a person who illegally operated a drone in the park and crashed it into the biggest hot spring there, the Grand Prismatic Spring. The visitor spoke to a park employee after the crash, who didn't report the crash.

"I don't think the person who they spoke with realized that drones couldn't be flown in the park or the implications of what they were being told," Amy Bartlett, spokesperson for Yellowstone National Park, told CNN.

Park officials aren't sure what kind of damage the crash has caused yet, because the spring is almost 200 feet deep. The National Park Service has also had problems with drones at the Grand Canyon National Park in Arizona and the Zion National Park in Utah.